/*
*Copyright 2021-2023 NERCIS
*
*Licensed under the Apache License, Version 2.0 (the "License");
*you may not use this file except in compliance with the License.
*You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
*Unless required by applicable law or agreed to in writing, software
*distributed under the License is distributed on an "AS IS" BASIS,
*WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*See the License for the specific language governing permissions and
*limitations under the License.
*/

package cn.ac.nercis.pes.community.support.transitions;

import javafx.scene.CacheHint;
import javafx.scene.Node;
import javafx.scene.layout.Region;

import java.util.concurrent.atomic.AtomicBoolean;

/**
 * CacheMemento
 *
 * @author Shadi Shaheen
 * @version 1.0
 * @since 2016-03-09
 */
public class CacheMemento {
    private boolean cache;
    private boolean cacheShape;
    private boolean snapToPixel;
    private CacheHint cacheHint = CacheHint.DEFAULT;
    private final Node node;
    private final AtomicBoolean isCached = new AtomicBoolean(false);

    public CacheMemento(Node node) {
        this.node = node;
    }

    /**
     * this method will cache the node only if it wasn't cached before
     */
    public void cache() {
        if (!isCached.getAndSet(true)) {
            this.cache = node.isCache();
            this.cacheHint = node.getCacheHint();
            node.setCache(true);
            node.setCacheHint(CacheHint.SPEED);
            if (node instanceof Region) {
                this.cacheShape = ((Region) node).isCacheShape();
                this.snapToPixel = ((Region) node).isSnapToPixel();
                ((Region) node).setCacheShape(true);
                ((Region) node).setSnapToPixel(true);
            }
        }
    }

    public void restore() {
        if (isCached.getAndSet(false)) {
            node.setCache(cache);
            node.setCacheHint(cacheHint);
            if (node instanceof Region) {
                ((Region) node).setCacheShape(cacheShape);
                ((Region) node).setSnapToPixel(snapToPixel);
            }
        }
    }
}